What Killed the Woolly Mammoth
A team of investigators is hot on the trail of an alien killer, as they try to solve one of the great mysteries of science: what agent of destruction swept across North America some 13,000 years ago and may have wiped the mammoths off the face of the earth? Could a perfect shot from outer space have triggered a mass extinction? For over a million years, the mammoths reigned over the landscapes of North America. The possibility that a killer comet may have taken out the mammoths about 13,000 years ago is a chilling reminder of our own tenuous existence. How long before the next wave of cosmic destruction alters the fate of life on earth?
